Coil-bender.



No. 847mg. PATENTED MAR. 19, 1907.

J. A. BURNS.

CGL BENDER. nrmourox nun un. no. 1904.

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PATBNTBD MAR. 19, 1907.

J. A. BURNS. COIL BENDER. nrmourox num 1.43.20. 1904.

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PTENTED MAR. 19, 1907. J. A. BURNS. I v COIL BENDER. APPLICATION FILED un. 2o. 1904.

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A TTO'RNEY Vl Tl/[SSES l 6 .(3 @ZKM/ PATENTE!) MAR. 19, 1907.

J. A. BURNS. COIL BBNDER. Ammon-Ion rILzn un. zo. 1904.

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WITNESSES:

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No. 847,549. PATBNTED MAR, 19, .1907.

" Y J. A. BURNS. l K

COIL- BBNDER. 'APPLICATIOLIY FILED JAILZO. 1904.

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A 45 duction ol' the complete coil involves an ex :a

UNITLD STATES AHS A. BURNS, OF

PA'IEN OFFICE.

OF PEN X SYLVAN 1A.

COIL-BENDER.

Specification of Letters Patent.

Patented March 19, 1907.

Application tiled January 20.1904. Serial No. 189.865.

To r'l/ iff/1.1m:y if may amm/rus B" it known that Ir.. l.\ \|r.s A. Bt'nxsav citizen olv the l`nited States, and a resident ot Homestead, in the county oll Allegheny and l 5 State ol' Pennsylvania, have invented a new and useful Improvement in Foil-Benders, of which the following is a specitication. Y )ly invention relates to machines for form-A; ing coils for eiectrical apparatus; and it has lo lor its ohiect to provide a machine which may i he utilized for bending an casilv-wound coil l l l ot simple preliminar) term into a more comy plex torni suitable tor application. to a corel t-o constitute an element ot a symmetrical 15 distributed winding.

Y ln the` accomlniziying drawings, Figure 1 is a view in side elevation, and Fig. l a view in front elevrtion, of a machine constructed in accordanw with my invention and shown in zo open por titoli. Fig. 3 is a' plan view of the machine in its closed position, a portion of one of the parts lieing broken away. Fig. 4 is a detail view olj one of the parts. Figa. 5 is a view, partially in side elevation and partially in section, ofthe machine shown in the preceding ligures; and Fig. 6 is a detail view of one ot the memlzers of the machine. Fig. 7 is a plan view of a preliminar)r coil; Fig. S, a plan view of a'eompleted coil, and Fig. 9 3o an end view ofthe coil shown in Fig. 8.

ln the construction of armature-coils having a comparatively large number of turns ot wire disposed in a plurality of layers each comprisingr one or more turns it has hereto- 35 fore been the usual practice to make each coil in several sections of the correct and final form, each ot' which comprises a plurality of turns of the conductor with hut a single turn per layer, the several sections 4o heilig afterward properly assembled and connected. The winding and forming of each o t' these sections must he done separately, requiring skilled lahor and expensive special molds to perform the operations, and the promanual operation of assembling and properly connecting the two or more separatelyformed sections.

ln the use of my invention a simple flat 5c coil comprising the total numlrer of turns to be employed in the complete armature-coil is lirst wound into the proper preliminary form and is then placed in the machine and quickly given a inal shape, such that the coils mayr Y he successively and expeditiously applied to the core without further hending. r.l he preliminary i'orm ot coil may he wound in approximately thesame length of time as that required lor winding a single section according to the old method, and the hending of the l, preliminary form into the tinal form of coil hy means of my invention involves t-he expenoiture ol' much less tinnl and lahor than was involved in assembling and connecting thesectionsundertheformerpractice. Itfoli lows, therefore, that the cost. olt a distributed winding may he materially reduced by the employment otl a machine embodying my invention.

The hase l of the machine. may be secured to a suitable bench or tahle 2 hy any suitable means, such as bolts 3 and lugs 4. The upper side of the hase is provided with a rectangular longitudinal recess 5 for the. reception of one et' the straight sides 6 of a coil 7, or, in other .vords,one oi' the sides of the coil which is to he placed in a core-slot. Any suitahle means may he employed for retaining the coil in position in the recess 5, that which I have devised comprising a plate 8, pivoted at one end to the hase 1 on a screw 9 and adapted at its other end to engage with aV screw-pin 10.

Adjoining the recess 5 at its ends and slopin!y toward the front of the maihine are ledges l, adapted to give the short portions l2 of, the ends of the toil the proper form.

Hinged to the lzase. 1 on a rod 13 is a movalile memler 14, tarrying at its free end a longitudinal shaft l5, the ends of which projectthrough apertures lt' in the sides of the lase and are provided with arms 17, which are longituilin-all)v movalle thereon and whitI h are held from rotative movement thereon liy means of keys 1S. The arms 17 are nori llj,Y retained at the extremities of the sh'. 1? `5 l; v means of helix' al springs 19. ln the free ends of the arms 17 are, recesses T20, provided for the reception oi" the end' projections l1 of the (oil 7, the means for retainingsaid portions of the t oil in the. recesses comprising U-shaped plates 22, whi'h sur- 'round the said por' ions and have holes 23 for the ref. eption ol staples 24, that are seat,- ed in the ends of the arms 17, su'lrstantially as showi. 'lhe memlzer l4 is normally supported' in its uppermost position by means of a helical spring 25.

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'and 24 put in position. Jclosed upon the lase l until the tonejne t2 A nation with a base having a recess for one side of a. eoil, of a member hinged thereto and A. seeond movable member 27 is pivoted to the hase l if; means of a. rod 2t; and is provided at. its l'ree end with an operatinghandle 2S and at its other end with a. am 29, whifh engages the meml'er 't-t and moves ity simultaneonshwith the said seriond memher. is a longitudinal fatA e 30, adapted to rereive the other straight .side 5t of the roil T, whieh is retained in position by means of a platt` 32, pivoted on a rod 32%, having at its tree end a reversely-disprserl fa/ie 3l opposite the fare 30, substantially as shown.

Means for tlamping the toil between the fares 31') and Bt comprise a lever S@'i,}ii\t' t'a1ll v attafhed to the member 27 and protruding through an aperture Bti in the plate 32, said level' being provided with a lug 37, whi"h e11- gages the 4inalined surta' e 3S of a boss PS).

Adjoining the ends of the straight laffe Il() are Curved ledges 4t), whif'h slope lal kward slightlv when the machine is open and npward when the mat-hine is (losed and whi'h are adapted to give the proper form to the portions 41 ot' the ends ot the eoil T.

A tongue 42 on the plate 32 is adapted to engage with a spring-lateh 43 on the front of the lrase l when the meml:er 27 is in its lowermost position and the lever 35 is in the position shown in Fig. 2.' The. ohjertI of this arrangement is to prevent the raising of the member 27 while a. toil still tlamped in position, it l-eing neressary lo 'tirst release the side 5] oll the foil h v turning the lever 35 before raising thel member 27.

The oil 7 having a preliminar)Y form similar to that. shown in Fig. 5 and t omprising the total numler oi turns to he empl-o ved in the eomplete armature-t oil is pla-l ed in the maehin'e with the straight side 6 in the reress 5 and the other straight side 31 on the fare 30, and the retaining' devizes are adjusted substantiall)Y as shown in Figs. l and 2.

The points 21 of the foils are plated in the Near the three end ot the member 2T4 recesses 2t) in the arms 17 and the pieees 22 I The memtrer 2T is engages the ends of the spring-lateh t3, and the ends of the rod ma)v then be hammered slightly with a mallet in order to make the various portions ot the ends of the coil ron- 5 form tlosely to the shapes of the ledgefaees. Then removed from the mafhine. the foil is in iinal form to he plated in the slots of the eore in eonmaI tion with whit h it .is to be used.

While l have referred to my invention as adapted for use in making armature-Coils, it

is to he understood that the foils so made ma)v be used inanv relations for which they ma` he suitable and that the form and dimensions of the marhine and its severa'. parts` may lie varied from what is shown within vcomparatively wide limits without departing from my invention.v

i l l l l l l i l i l taining the other side of said eoil, and arms hinged to said base and provided with means for retaining the ends of said eoil.

2. A maehine for bending wire eoils eomprising a base provided with means t'or retaining one side of a eoil and with ledgefaees for shaping portions of the ends of said Coil, a member hinged to said base and provided with means for retaining the other side. of said eoil and with faces for shaping other portions of the ends oi' said eoil, and arms hinged to said base and provided with means for retaining and forming the remaining portions ofthe ends of said coil.

3. ln a. machine for bonding wire eoilsJ a base having a reeessed portion for the reeeption of one side of a eoil7 in eombination with a movable member for gripping the other `side ot the eoil and bending it1 into a dill'erent position with reference to the first side, and a movable member for gripping the ends ofthe coil. i

4. ln a machine for bending wire eoils, a base having a recessed ortion for the reception et' one side of ar eoilland ledges adjoining the said reeess at both ends thereof, in combination with a hinged member for gripping and bending the other side ofthe oeil.

ln a machine for bending wire coils, a base having a reeess for the reception or one side of a eoil, in combination with hinged members for gripping the other side and the ends ofthe eoii iialependentlv of the base and bending them to the desired form.

(i. In a maehine for bending wire coils, a. base having a recess for the reception of one side of a eeil andmeans for retaining the coil in said ret-ess, in combination with a. movable member for gripping and bending the other side of the. coil, and a. movable member for gripping the ends ot" the coil.

7. ln a eoil-liending maehine, the eombi having a ledge-mee and means for gripping the other side ofthe eotl.

8. ln a mil-bending machine. the eombination with av .base having a recess and ledges bram-hing from the ends thereof, of a inember hinged to said base and having a ledgefaee and ledges adioining the aforesaid face at'. the ends thereof.

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9. 'lle eombination 'with a. hase, ofa member hingedv thereto having a ledge-faro parallel to the axis et the member, and a plate hinged to said member, said plate havingr a ledge-faee adapted, in conjunction with the aforesaid fare, to form an aperture.

10. The combination with a. base, of a member hinged thereto having a ledge-face parallel io the axis of the member, a plate l pivoted to said nieniher and adapted. in conninetion with the aforesaid lace, to i'orm an t aperture, and means for clamping the plate tothe hinged memher.

il. .In a coil-bending machine, the combination with a. base having a coil-holding recess, of a member hinged to said base andv having coil-gripping means and means lor. si'ipporting the t'ree end oi'Y said member normail)- in its uppermost position.

l2. 'l`lie combination with a hase. of a member hinged thereto, means for supporting the i'iee end of said member normally in its uppermost position. anda feathered shaft secured to the l'ree end ol .said member and longitiidiiiiill)-iiim'iil le arms thereon vprovided with recesses at the tree ends` i'zerent'.

i3. 'l`he combination with a hase, of a member hfiiged thereto, means for supporting the t're end of said nieinher normally iii its uppermost position, and a featheredshal't secured to the free crd of said member and loiigitiirlinallv-movahie arms therecii.

t4. rI`he combination vith a hase. of a member hinged thereto, means for siippoiti ingl the tree end of said member nornialljY in its uppermost hosition, :i featheied shat't secured to the free end ot' said niemlrer, longitiidmalty-movable arms thereon provided with recesses at the free ends thereot' for the. reception of' the ends of a coil and means for securing the ends of the coil in said recesses. l5. The combination with a hase, of a member hinged thereto, means for supporting the free end of said member normall \v in its uppermost position, a feathered sliat't secured to the J[ree end ot' said member, longitudinaily-movable arms thereon provided with recesses at the free ends thereot', and resilient' means for normally retaining said arms at the extremities ol". the said shaft.

16. In a machine for bending wire coils, a hase having a recess for one side of a coil and a member hinged to said base and provided i with means for gripping the ends of the coil i independentljiP of the base. l l

17. 1n a coil-bending machine, the. combination with a hase having aV recess Jfor one l Iside of a eoiha coil-gripping member hinged g to said base and a spring ior normally siipj porting the said member in its -nppermost Q osition, of a second member hinged to said liase which is provided with means for nievi ing the said first-named memher against the l action ot' said spring. 5 1S. In a' coil-bendiiig machine, the eoinhif nation with a base having a recess l'or one side of a coil and a coil-gripl'iing member l hinged `to said haseJ of a. second meinherl hinged to said base and having :i projecting arm at its hinged end which engages with said first member so that the. two members are moved simultaneously.

19. The coinhinationwith a hase provided with means for retaining one side of a coil, and a member hinged to said base provided with means ioi' retaining the other side ot` said coil, ol' means for locking the free end of said iiieniher to said hase when in its closed position until the coil is released from said hinged member.

2t). in a'coii-hending machine7 die combination with a hase having a recess for one side oi' a coil and ledges to receive adjacent end portions, of a member hinged to the hase and having recessed arms to receive the ends ol the eoit and a second hinged member having a recess l'or the other side ol' the coil and ledges to receive the adjacent end portions and having also means for engaging the first hinged iiiemlier lo move it to its closed position.

2i, coil-bending machine comprising a hase and :i hinged member for respectively gripping the opposite sides ot a coil and a second hinged member for gripping the ends of the coil.

A coil-bending machine comprising a hase having a fiirming-surl'aee for approximately one half ol' a coil, a hinged member lia-ving a t'oi'iiiing-siirl' ace for approximately the. other hall' of the coil and a second hinged member having recesses to forni offset bends between the two halves oi' the coil.

23. A coil-bending machine comprising a hase having a recess and surfaces to receive approximately one half of ay coil, a hinged member having a recess and Surfaces for approximate!)v the other half of the coil and a second hinged member having recesses to form oll'set bends in the ends of the coil.

24. ln aveoil-hending machine, the combination with a hase having a recess and means forV locking one side of a coil therein. of a,

hinged member having a recess and means for locking rthe other side of the coil therein and a second hinged member having arms provided with recesses and means for iocliing the ends of the coil therein.

25. In a coil-bending machine, the combination with a base having a recess, meansv for locking one side of a coil therein and ledges to receive the adjacent end portions ci.' the coil, ot' a hinged member having a recess, means for locking the other side of the coil therein and ledges to receive the adjacent end portions of the coil and a second hinged member having arms provided with recesses i and means for locking the ends of the coil therein in order to form ollset bends.

In testimony whereof I have hereunto suhscribed in v naine this 15th day of January,

- JAMES A. BURNS. \Yitncsses:

OTTO S. SCHAIRER, BmNEY HINES.

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